LiTaO3 crystal lens is also widely used E-O crystalLiTaO3 crystal lens is also widely used E-O crystal.Main properities of LiTaO3 lens include:Transparent:0.4-5.0µmE-O Coefficient:r33=30.4Refractive Indices:no=2.716,ne=2.180 at 633nm1) Diameter:76.2mm,50mm2) Orientation:X,Z,36°Y,112X3) Polish:both siades or single side 10/5 S/D4) TTV<10 Um5) Bow:<20 Um